(cherry picked from commit 8fb08096)

MichelJuillard authored Jul 31, 2015 and Sébastien Villemot committed Jul 31, 2015

for Octave 4.0.0

(cherry picked from commit caa04fb2)

Replace them by equivalents in M_ (and an extra one: M_.dynamic).

IMPORTANT POINT: oo_.dr.npred used to count both purely backward and mixed/both
variables. This was the cause of lots of confusion. The new M_.npred only
counts purely backward variables.

We now have the following indentities:

M_.npred + M_.nboth + M_.nfwrd + M_.nstatic = M_.endo_nbr
M_.nspred = M_.npred + M_.nboth
M_.nsfwrd = M_.nfwrd + M_.nboth
M_.ndynamic = M_.npred + M_.nboth + M_.nfwrd

only as forward looking (I believe that such models can't be solved,
but it is a different issue).

labels in Policy and Transition Functions.

generalized Schur decomposition, rather than the ones computed by
eig()

checking Blanchard and Kahn conditions with CHECK

-pass along errors returned by cycle reduction algorithms;
-logarithmic reduction fails on error
-replace expensive and random condest() by call to linsolve()
-uses linsolve() to compute hx

options_.gpu (no interface yet, use options_.gpu=1). Added test
./tests/first_order/fs2000_cr.mod

and singular coefficient matrix for current variables

fixing bug in evaluating rank condition for BK when using check (introduced in commit 4d51f38b)

Fixed bug (reported in karaba:/var/tmp/dynare-master-check-o0FCvBRHnf.log). dr.state_var was defined in the wrong place.